package com.ruoyi.system.service.impl;

import java.util.*;
import java.util.stream.Collectors;

import com.ruoyi.common.integrate.domain.Department;
import com.ruoyi.common.integrate.service.QYWeiXinService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.ruoyi.common.annotation.DataScope;
import com.ruoyi.common.constant.UserConstants;
import com.ruoyi.common.core.domain.TreeSelect;
import com.ruoyi.common.core.domain.entity.SysDept;
import com.ruoyi.common.core.domain.entity.SysRole;
import com.ruoyi.common.core.domain.entity.SysUser;
import com.ruoyi.common.core.text.Convert;
import com.ruoyi.common.exception.ServiceException;
import com.ruoyi.common.utils.SecurityUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.spring.SpringUtils;
import com.ruoyi.system.mapper.SysDeptMapper;
import com.ruoyi.system.mapper.SysRoleMapper;
import com.ruoyi.system.service.ISysDeptService;
import org.springframework.transaction.annotation.Transactional;

/**
 * 部门管理 服务实现
 *
 * @author ruoyi
 */
@Service
public class SysDeptServiceImpl implements ISysDeptService {
    private final Logger logger = LoggerFactory.getLogger(this.getClass());

    @Autowired
    private SysDeptMapper deptMapper;
    @Autowired
    private SysRoleMapper roleMapper;
    @Autowired
    private QYWeiXinService qyWeiXinService;

    /**
     * 查询部门管理数据
     *
     * @param dept 部门信息
     * @return 部门信息集合
     */
    @Override
    @DataScope(deptAlias = "d")
    public List<SysDept> selectDeptList(SysDept dept) {
        return deptMapper.selectDeptList(dept);
    }

    /**
     * 构建前端所需要树结构
     *
     * @param depts 部门列表
     * @return 树结构列表
     */
    @Override
    public List<SysDept> buildDeptTree(List<SysDept> depts) {
        List<SysDept> returnList = new ArrayList<SysDept>();
        List<Long> tempList = new ArrayList<Long>();
        for (SysDept dept : depts) {
            tempList.add(dept.getDeptId());
        }
        for (SysDept dept : depts) {
            // 如果是顶级节点, 遍历该父节点的所有子节点
            if (!tempList.contains(dept.getParentId())) {
                recursionFn(depts, dept);
                returnList.add(dept);
            }
        }
        if (returnList.isEmpty()) {
            returnList = depts;
        }
        return returnList;
    }

    /**
     * 构建前端所需要下拉树结构
     *
     * @param depts 部门列表
     * @return 下拉树结构列表
     */
    @Override
    public List<TreeSelect> buildDeptTreeSelect(List<SysDept> depts) {
        List<SysDept> deptTrees = buildDeptTree(depts);
        return deptTrees.stream().map(TreeSelect::new).collect(Collectors.toList());
    }

    /**
     * 根据角色ID查询部门树信息
     *
     * @param roleId 角色ID
     * @return 选中部门列表
     */
    @Override
    public List<Long> selectDeptListByRoleId(Long roleId) {
        SysRole role = roleMapper.selectRoleById(roleId);
        return deptMapper.selectDeptListByRoleId(roleId, role.isDeptCheckStrictly());
    }

    /**
     * 根据部门ID查询信息
     *
     * @param deptId 部门ID
     * @return 部门信息
     */
    @Override
    public SysDept selectDeptById(Long deptId) {
        return deptMapper.selectDeptById(deptId);
    }

    /**
     * 根据ID查询所有子部门（正常状态）
     *
     * @param deptId 部门ID
     * @return 子部门数
     */
    @Override
    public int selectNormalChildrenDeptById(Long deptId) {
        return deptMapper.selectNormalChildrenDeptById(deptId);
    }

    /**
     * 是否存在子节点
     *
     * @param deptId 部门ID
     * @return 结果
     */
    @Override
    public boolean hasChildByDeptId(Long deptId) {
        int result = deptMapper.hasChildByDeptId(deptId);
        return result > 0;
    }

    /**
     * 查询部门是否存在用户
     *
     * @param deptId 部门ID
     * @return 结果 true 存在 false 不存在
     */
    @Override
    public boolean checkDeptExistUser(Long deptId) {
        int result = deptMapper.checkDeptExistUser(deptId);
        return result > 0;
    }

    /**
     * 校验部门名称是否唯一
     *
     * @param dept 部门信息
     * @return 结果
     */
    @Override
    public String checkDeptNameUnique(SysDept dept) {
        Long deptId = StringUtils.isNull(dept.getDeptId()) ? -1L : dept.getDeptId();
        SysDept info = deptMapper.checkDeptNameUnique(dept.getDeptName(), dept.getParentId());
        if (StringUtils.isNotNull(info) && info.getDeptId().longValue() != deptId.longValue()) {
            return UserConstants.NOT_UNIQUE;
        }
        return UserConstants.UNIQUE;
    }

    /**
     * 校验部门是否有数据权限
     *
     * @param deptId 部门id
     */
    @Override
    public void checkDeptDataScope(Long deptId) {
        if (!SysUser.isAdmin(SecurityUtils.getUserId())) {
            SysDept dept = new SysDept();
            dept.setDeptId(deptId);
            List<SysDept> depts = SpringUtils.getAopProxy(this).selectDeptList(dept);
            if (StringUtils.isEmpty(depts)) {
                throw new ServiceException("没有权限访问部门数据！");
            }
        }
    }

    /**
     * 同步 企业微信 部门列表数据
     *
     * @return
     */
    @Override
    @Transactional
    public void syncQYWeiXinDeptList() {
        List<Department> departmentList = qyWeiXinService.getDeptByQYWeiXin();//企业微信部门
        // 根编号
        Long rootId = departmentList.stream().sorted(Comparator.comparing(Department::getId)).findFirst().orElse(null).getParentid();
        // 排序（企业微信的编号比较乱）
        List<Department> tree = buildTree(departmentList, rootId);
        List<Department> wxList = new ArrayList<>();
        recursionDeptList(wxList, tree);

        List<SysDept> deptList = deptMapper.selectDeptAll();//系统部门

        // 企业微信所有部门id
        List<Long> allDeptIdWX = wxList.stream().map(e -> e.getId()).collect(Collectors.toList());
        // 系统所有部门id
        List<Long> allSysDeptId = deptList.stream().map(e -> e.getDeptId()).collect(Collectors.toList());

        // 重复的部门id（系统已存在的部门信息）
        List<Long> bothDeptIds = allSysDeptId.stream().filter(e -> allDeptIdWX.contains(e)).collect(Collectors.toList());

        // 重复的部门（系统已存在的部门信息）--- 做修改操作
        List<SysDept> sysDeptList = deptList.stream().filter(e -> allDeptIdWX.contains(e.getDeptId())).collect(Collectors.toList());
        logger.info("======================== 同步 企业微信部门数据 ========================");
        logger.info("更新条数: " + sysDeptList.size());
        // 修改
        sysDeptList.forEach(e -> {
            Department department = wxList.stream().filter(a -> a.getId() == e.getDeptId()).findFirst().orElse(null);//如果没有，则返回null
            if (Objects.nonNull(department)) {
                e.setParentId(department.getParentid());
                e.setDeptName(department.getName());
                e.setOrderNum(department.getOrder().toString());
                e.setUpdateBy(SecurityUtils.getLoginUser().getUsername());
            }
            updateDept(e);
        });

        // 没有的部门-新增和删除
        List<Long> delList = allSysDeptId.stream().filter(e -> !allDeptIdWX.contains(e)).collect(Collectors.toList());
        logger.info("删除条数: " + delList.size());
        delList.forEach(e -> deleteDeptById(e));

        List<Department> addList = wxList.stream().filter(e -> !bothDeptIds.contains(e.getId())).collect(Collectors.toList());
        logger.info("新增条数: " + addList.size());
        addList.forEach(e -> {
            SysDept addDept = new SysDept();
            addDept.setDeptId(e.getId());
            addDept.setParentId(e.getParentid());
            addDept.setDeptName(e.getName());
            addDept.setOrderNum(e.getOrder().toString());
            addDept.setCreateBy(SecurityUtils.getLoginUser().getUsername());
            insertDept(addDept);
        });
    }

    /**
     * 递归列表
     */
    private void recursionDeptList(List<Department> newList, List<Department> deptList) {
        for (Department dept : deptList) {
            newList.add(dept);
            if (Objects.nonNull(dept.getChildren())) {
                recursionDeptList(newList, dept.getChildren());
            }
        }
    }

    /**
     * 树形结构
     * @param departmentList
     * @return
     */
    private List<Department> buildTree(List<Department> departmentList, Long parentId){
        Map<Long, List<Department>> collects = departmentList.stream().filter(a -> parentId != a.getParentid())
                .collect(Collectors.groupingBy(a -> a.getParentid()));
        departmentList.forEach(d -> d.setChildren(collects.get(d.getId())));
        return departmentList.stream().filter(a -> parentId == a.getParentid()).collect(Collectors.toList());
    }

    /**
     * 新增保存部门信息
     *
     * @param dept 部门信息
     * @return 结果
     */
    @Override
    public int insertDept(SysDept dept) {
        SysDept info = deptMapper.selectDeptById(dept.getParentId());
        // 如果父节点不为正常状态,则不允许新增子节点
        if (!UserConstants.DEPT_NORMAL.equals(info.getStatus())) {
            throw new ServiceException("部门停用，不允许新增");
        }
        dept.setAncestors(info.getAncestors() + "," + dept.getParentId());
        return deptMapper.insertDept(dept);
    }

    /**
     * 修改保存部门信息
     *
     * @param dept 部门信息
     * @return 结果
     */
    @Override
    public int updateDept(SysDept dept) {
        SysDept newParentDept = deptMapper.selectDeptById(dept.getParentId());
        SysDept oldDept = deptMapper.selectDeptById(dept.getDeptId());
        if (StringUtils.isNotNull(newParentDept) && StringUtils.isNotNull(oldDept)) {
            String newAncestors = newParentDept.getAncestors() + "," + newParentDept.getDeptId();
            String oldAncestors = oldDept.getAncestors();
            dept.setAncestors(newAncestors);
            updateDeptChildren(dept.getDeptId(), newAncestors, oldAncestors);
        }
        int result = deptMapper.updateDept(dept);
        if (UserConstants.DEPT_NORMAL.equals(dept.getStatus()) && StringUtils.isNotEmpty(dept.getAncestors())
                && !StringUtils.equals("0", dept.getAncestors())) {
            // 如果该部门是启用状态，则启用该部门的所有上级部门
            updateParentDeptStatusNormal(dept);
        }
        return result;
    }

    /**
     * 修改该部门的父级部门状态
     *
     * @param dept 当前部门
     */
    private void updateParentDeptStatusNormal(SysDept dept) {
        String ancestors = dept.getAncestors();
        Long[] deptIds = Convert.toLongArray(ancestors);
        deptMapper.updateDeptStatusNormal(deptIds);
    }

    /**
     * 修改子元素关系
     *
     * @param deptId       被修改的部门ID
     * @param newAncestors 新的父ID集合
     * @param oldAncestors 旧的父ID集合
     */
    public void updateDeptChildren(Long deptId, String newAncestors, String oldAncestors) {
        List<SysDept> children = deptMapper.selectChildrenDeptById(deptId);
        for (SysDept child : children) {
            child.setAncestors(child.getAncestors().replaceFirst(oldAncestors, newAncestors));
        }
        if (children.size() > 0) {
            deptMapper.updateDeptChildren(children);
        }
    }

    /**
     * 删除部门管理信息
     *
     * @param deptId 部门ID
     * @return 结果
     */
    @Override
    public int deleteDeptById(Long deptId) {
        return deptMapper.deleteDeptById(deptId);
    }

    /**
     * 递归列表
     */
    private void recursionFn(List<SysDept> list, SysDept t) {
        // 得到子节点列表
        List<SysDept> childList = getChildList(list, t);
        t.setChildren(childList);
        for (SysDept tChild : childList) {
            if (hasChild(list, tChild)) {
                recursionFn(list, tChild);
            }
        }
    }

    /**
     * 得到子节点列表
     */
    private List<SysDept> getChildList(List<SysDept> list, SysDept t) {
        List<SysDept> tlist = new ArrayList<SysDept>();
        Iterator<SysDept> it = list.iterator();
        while (it.hasNext()) {
            SysDept n = (SysDept) it.next();
            if (StringUtils.isNotNull(n.getParentId()) && n.getParentId().longValue() == t.getDeptId().longValue()) {
                tlist.add(n);
            }
        }
        return tlist;
    }

    /**
     * 判断是否有子节点
     */
    private boolean hasChild(List<SysDept> list, SysDept t) {
        return getChildList(list, t).size() > 0;
    }
}
